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Finding the Fourth Proportional to 124,608, 171,959.20 and 79,896

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Solution

The fourth proportional to 124,608, 171,959.20 and 79,896 is: 110,256.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,608 : 171,959.20 = 79,896 : x
  2. Step 2: Convert to fraction form
    124,608/171,959.20 = 79,896/x
  3. Step 3: Cross multiply
    124,608x = 171,959.20 × 79,896
  4. Step 4: Simplify right side
    124,608x = 13,738,852,243.20
  5. Step 5: Solve for x
    x = 13,738,852,243.20/124,608
  6. Step 6: Final answer
    x = 110,256.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.